From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756616Ab1KIKfn (ORCPT ); Wed, 9 Nov 2011 05:35:43 -0500 Received: from brockman.in8.de ([85.214.220.56]:42406 "EHLO mail.in8.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752693Ab1KIKfm (ORCPT ); Wed, 9 Nov 2011 05:35:42 -0500 X-Greylist: delayed 368 seconds by postgrey-1.27 at vger.kernel.org; Wed, 09 Nov 2011 05:35:42 EST Message-ID: <4EBA560B.1070509@jan-o-sch.net> Date: Wed, 09 Nov 2011 11:29:31 +0100 From: Jan Schmidt User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1 MIME-Version: 1.0 To: linux-btrfs CC: Christoph Hellwig , Chris Mason , Arne Jansen , Andrea Gelmini , LKML Subject: Re: [GIT PULL] Btrfs pull request References: <20111106183851.GA4339@shiny> <4EB7A6CC.5030502@gmx.net> <4EB7D2D8.2060505@gmx.net> <4EB8DEAC.7000906@gmx.net> <20111109010701.GI4149@shiny> <20111109074847.GA16742@infradead.org> In-Reply-To: <20111109074847.GA16742@infradead.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 09.11.2011 08:48, schrieb Christoph Hellwig: > On Tue, Nov 08, 2011 at 08:07:01PM -0500, Chris Mason wrote: >> Looks like bio_add_page() is failing and we're getting the enomem from >> there. LVM is only letting us put one page in each bio. > > Yes, at the moment all bio based DM targets only allow single page I/O. Wait. If I got that correctly, each bio_add_page needs special ENOMEM treatment (assuming the target could always be a device mapper target), right? "grep bio_add_page fs/btrfs/*.c" will make you unhappy. -Jan